<template>
    <div class="login">
        <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
            <h3 class="title">RuoYi-Vue-Plus多租户管理系统</h3>
            <el-form-item prop="tenantId" v-if="tenantEnabled">
                <el-select v-model="loginForm.tenantId" filterable placeholder="请选择/输入公司名称" style="width: 100%">
                    <el-option
                            v-for="item in tenantList"
                            :key="item.tenantId"
                            :label="item.companyName"
                            :value="item.tenantId">
                    </el-option>
                    <template #prefix><svg-icon icon-class="company" class="el-input__icon input-icon" /></template>
                </el-select>
            </el-form-item>
            <el-form-item prop="username">
                <el-input
                        v-model="loginForm.username"
                        type="text"
                        size="large"
                        auto-complete="off"
                        placeholder="账号"
                >
                    <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
                </el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input
                        v-model="loginForm.password"
                        type="password"
                        size="large"
                        auto-complete="off"
                        placeholder="密码"
                        @keyup.enter="handleLogin"
                >
                    <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
                </el-input>
            </el-form-item>
            <el-form-item prop="code" v-if="captchaEnabled">
                <el-input
                        v-model="loginForm.code"
                        size="large"
                        auto-complete="off"
                        placeholder="验证码"
                        style="width: 63%"
                        @keyup.enter="handleLogin"
                >
                    <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
                </el-input>
                <div class="login-code">
                    <img :src="codeUrl" @click="getCode" class="login-code-img"/>
                </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
            <el-form-item style="width:100%;">
                <el-button
                        :loading="loading"
                        size="large"
                        type="primary"
                        style="width:100%;"
                        @click.prevent="handleLogin"
                >
                    <span v-if="!loading">登 录</span>
                    <span v-else>登 录 中...</span>
                </el-button>
                <div style="float: right;" v-if="register">
                    <router-link class="link-type" :to="'/register'">立即注册</router-link>
                </div>
            </el-form-item>
        </el-form>
        <!--  底部  -->
        <div class="el-login-footer">
            <span>Copyright © 2018-2023 疯狂的狮子Li All Rights Reserved.</span>
        </div>
    </div>
</template>

<script setup>
import { getCodeImg, getTenantList } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from '@/store/modules/user'

const userStore = useUserStore()
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
    tenantId: "000000",
    username: "admin",
    password: "admin123",
    rememberMe: false,
    code: "",
    uuid: ""
});

const loginRules = {
    tenantId: [{ required: true, trigger: "blur", message: "请输入您的租户编号" }],
    username: [{ required: true, trigger: "blur", message: "请输入您的账号" }],
    password: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
    code: [{ required: true, trigger: "change", message: "请输入验证码" }]
};

const codeUrl = ref("");
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);
// 租户列表
const tenantList = ref([]);
// 租户开关
const tenantEnabled = ref(true);

function handleLogin() {
    proxy.$refs.loginRef.validate(valid => {
        if (valid) {
            loading.value = true;
            // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
            if (loginForm.value.rememberMe) {
                Cookies.set("tenantId", loginForm.value.tenantId, { expires: 30 });
                Cookies.set("username", loginForm.value.username, { expires: 30 });
                Cookies.set("password", encrypt(loginForm.value.password), { expires: 30 });
                Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
            } else {
                // 否则移除
                Cookies.remove("tenantId");
                Cookies.remove("username");
                Cookies.remove("password");
                Cookies.remove("rememberMe");
            }
            // 调用action的登录方法
            userStore.login(loginForm.value).then(() => {
                router.push({ path: redirect.value || "/" });
            }).catch(() => {
                loading.value = false;
                // 重新获取验证码
                if (captchaEnabled.value) {
                    getCode();
                }
            });
        }
    });
}

function getCode() {
    getCodeImg().then(res => {
        captchaEnabled.value = res.data.captchaEnabled === undefined ? true : res.data.captchaEnabled;
        if (captchaEnabled.value) {
            codeUrl.value = "data:image/gif;base64," + res.data.img;
            loginForm.value.uuid = res.data.uuid;
        }
    });
}

function initTenantList() {
    getTenantList().then(res => {
        const vo = res.data;
        tenantEnabled.value = vo.tenantEnabled === undefined ? true : vo.tenantEnabled;
        if (tenantEnabled.value) {
            tenantList.value = vo.voList;
            if (tenantList.value != null && tenantList.value.length !== 0) {
                loginForm.value.tenantId = tenantList.value[0].tenantId;
            }
        }
    });
}

function getCookie() {
    const tenantId = Cookies.get("tenantId");
    const username = Cookies.get("username");
    const password = Cookies.get("password");
    const rememberMe = Cookies.get("rememberMe");
    loginForm.value = {
        tenantId: tenantId === undefined ? loginForm.value.tenantId : tenantId,
        username: username === undefined ? loginForm.value.username : username,
        password: password === undefined ? loginForm.value.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
    };
}

getCode();
initTenantList();
getCookie();
</script>

<style lang='scss' scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 40px;
    input {
      height: 40px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 40px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
